Gas fuel



(No Model.)

0. M. SHANNON.

WATER HEATER.

No. 451,624. Patented May 5, 1891.

THE Nonms PETERS 1:0,, PHDTG-LITHO.. w-smm. uuuuuu c.

. employing gas fuel and intended for attaclr UNITED STATES r PATENTOFFICEQ OSCAR M. SHANNON, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE NE\V ERAGAS FUEL APPLIANCE COMPANY, OF SAME PLACE.

WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 451,624, dated May 5,1891.

Application filed August 19, 1889. Serial No. 321,204. (No model.)

To all 1071/0112, it may concern:

Be it known that 1, OSCAR M. SHANNON, of Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin ater-Heaters; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention has for its object to provide an improved construction inwater-heaters ment to range-boilers and similar vessels. As illustrated,it is adapted to be used either independently or in conjunction with arange having a water-back.

Figure 1 is an external view of the device in side elevation connectedwith a range or kitchen-boiler and having a gas-burner in place beneathit for supplying the heat. Fig. 2 is a central vertical section of theboiler and water-heater. Fig. 3 is a top or plan view of the interiorshell of the water-heater.

A represents a range-boiler, of which a is the bottom plate, having theusual interiorlythreaded bushing a secured in the middle of it. A is theusual bifurcated standard supporting the boiler.

B is the water-heater of my improved construction. This heater comprisesa top plate B, a bottom plate B and an interior shell or partition B Theforms of these several parts are by preference as shown-that is to say,the top plate is an inverted cone or cup, the bottom plate flat, and theinterior shell B conical. The bottom plate B is shown secured at itsedge to the margin of the top plate B, so as to make a water-tight jointtherewith, and the top plate is provided with a boss I) interiorlythreaded to receive a nipple O, which may be also screwed into thebushing a of the boiler. The interior cone or shell B is smaller thanthe top plate B to afford a considerable space between them forming awater-passage, and is provided with a central pipe b,which rises throughthe passage in the nipple C, said pipe being small enough to afford apassage around the tube and within said nipple for water from the boilerto the heater. Communication is provided between the exterior and theinterior of the shell 13 at the bottom thereof, which may be desirablydone by means of notches or holes 19 forming openings in the lowermargin of the said shell, but which may obviously be otherwise providedby supporting the shell at a distance from the bottom plate 13 Thetube 1) rises within the boiler A to any desired distance, andpreferably to, a height on a level with or above the entrancepipe nowprovided in such boilers as a connection for the hot-water pipe leadingfrom the range water-back.

To facilitate thtarattachment of the heater B directly beneath a boilerin position on its standard, the pipe I) 1nay,if desired,be made in twoor more parts, which may be slipped together, one over the other, asindicated, or connected in any suitable way.

As above described, the heater Bis adapted for the heating of the waterwithin the boiler A by the application of any suitable gas or otherburner beneath the bottom plate B The burner will operate moreespecially to heat the water within the cone B and as said water isheated it will rise through the pipe I), while cold water from thebottom of the boiler A will find admission to the said cone through thenipple C and around the pipe Z), passing down the outside of the cone l3and inwardly to the interior thereof beneath the lower edge of thelatter or through the notches b To adapt the heater B for connectionwith the water-back of a range or for drainage, an interiorly-threadedopening 19 is provided at or near the bottom of the heater, which in theillustration is connected by a branch D with the range-pipe E, but whichmay obviously take a faucet or connect by the usual valved drainage-pipewith the sewer;

The construction of the heater B and its directconnection with theboilerin the position directly beneath the latter, as shown, afford avery active circulation of water from one to the other, greatlysimplifying the work of attachment and prevent loss of heat byradiation, such as occurs in the use of an exposed carryingpipe for theheated water. The top plate B of the heater will usuallybe cast, and thebottom plate B of sheet metal,

the two being connected by turning the margin of the bottom plate llover a horizontall v projecting marginal llange 1/ on the lower edge ofsaid top plate 13'.

As a means of more certainlycentering the interior shell or cone Bwithin the outer shell of the heater ]3, the top plate B is shownprovided with lugs b, which regulate the lateral space between theshells. If desired, the shell B which may be of sheet metal, as tin,zinc, or galvanized iron, may be soldered to these lugs Zr before theconnection of the bottom plate B to the top plate 15.

Manifest] y various modifications may be made in the details ofconstruction without departure from the spirit of my invention, and I donotwish to be restricted to the exact construction shown.

I claim as my invention 1. The water-heating apparatus described forattachment to range-boilers having central openings in their bottomplates, said up paratus consisting of an inverted-cup-sl1aped top plateprovided with a threaded opening in the top for connection to theboiler, a bottom plate secured to the top plate, an interior shellprovided with an opening or openings at its lower part and adapted toafford a water-passage exterior to itself extending from the top openingof the top plate to said lower opening or openings of the shell, and atube leading from the upper part of the interior of said shell throughthe upper open ing of the top plate and adapted to extend above thebottom plate of the boiler to which the apparatus is to be secured,substantially as described.

2. As an article of manufacture, the Waterheating apparatus describedfor attachment to range-boilers having central openings in their bottomplates, said apparatus consisting of an inverted-cup-shaped top plateprovided with a threaded opening in its top for connection with theboiler and with a lowerside opening, a bottom plate secured to the topplate, an interior shell separated by a space from the top plate andhaving a passage or passages at its lower part, and a tube leading fromthe upper part of the interior of said shell through the upper openingof the top plate and adapted to extend above the bottom plate of theboiler to which the apparatus is to be secured, substantially asdescribed.

In testimony that I claim the foregoing as my invention I affix mysignature in presence of two witnesses.

OSCAR M. SHANNON.

Witnesses:

M. E. DAYTON, TAYLOR E. llnonnv.

